Thin-layer-covered multilayer golf ball
View Patent ↗A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and at least one outer core layer adjacent the center, and the cover comprises at least one inner cover layer and an outer cover layer, wherein the center has an outer diameter from about 0.375 in to about 1.4 in and deflection of greater than about 4.5 mm under a load of 100 Kg, the outer core layer has an outer diameter of from about 1.4 in to about 1.62 in, the inner cover layer has an outer diameter of greater than about 1.58 in and a material hardness of less than about 72 Shore D, and the outer cover layer has a hardness of greater than about 50 Shore D.
1. A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and at least one outer core layer adjacent the center, and the cover comprises at least one inner cover layer and an outer cover layer;
(a) wherein the center has an outer diameter from about 0.375 in to 1.4 in and deflection of greater than 4.5 mm under a load of 100 Kg;
(b) the outer core layer has an outer diameter of from 1.4 in to about 1.62 in;
(c) the inner cover layer has an outer diameter of greater than 1.58 in and a material hardness of less than 72 Shore D; and
(d) the outer cover layer has a hardness of greater than 56 Shore D;
and wherein the center has a first hardness, the outer core layer has a second hardness greater than the first, and the inner cover layer has a third hardness greater than the second.
2. The golf ball of claim 1 , wherein the outer cover layer has a material hardness less than 55 shore D.
3. The golf ball of claim 2 , wherein the outer cover layer has a material hardness less than 50 shore D.
4. The golf ball of claim 1 , wherein the inner cover layer material hardness is between 60 and 70 Shore D.
5. The golf ball of claim 4 , wherein the inner cover layer material hardness is between 60 and 65 Shore D.
6. The golf ball of claim 1 , wherein the inner cover layer outer diameter is from 1.59 in to about 1.66 in.
7. The golf ball of claim 6 , wherein the inner cover layer outer diameter is from 1.6 in to 1.64 in.
8. The golf ball of claim 1 , wherein the center outer diameter is from 0.5 in toe 1.25 in.
9. The golf ball of claim 8 , wherein the center outer diameter from 0.9 in to 1.2 in.
10. The golf ball of claim 1 , wherein the outer core layer outer diameter is from 1.52 in to 1.59 in.
11. The golf ball of claim 10 , wherein the outer core layer outer diameter is from 1.535 in to 1.58 in.
12. The golf ball of claim 1 , wherein the ball has a moment of inertia of less than 83 g·cm 2 .
13. The golf ball of claim 1 , wherein the outer cover layer has a fourth hardness less than the third hardness.
14. The golf ball of claim 1 , wherein the center has a first specific gravity and the outer core layer has a second specific gravity that differ by less than 0.1.
15. The golf ball of claim 1 , wherein the center is solid.
16. A golf ball comprising a care and a cover disposed about the core, wherein the core comprises a solid center and an outer core layer adjacent the center, and the cover comprises an inner cover layer and an outer cover layer;
(a) wherein the center has an outer diameter from 0.375 in to 1.4 in and deflection of greater than 4.5 mm under a load of 100 Kg;
(b) the outer core layer has an outer diameter of from 1.4 in to 1.62 in;
(c) the inner cover layer has an outer diameter of greater than 1.58 in and a material hardness of less than 72 Shore D; and
(d) the outer cover layer has a hardness of greater than 56 Shore D;
and wherein the center has a first hardness, the outer core layer has a second hardness greater than the first, and the inner cover layer has a third hardness greater than the second.
17. The golf ball of claim 16 , wherein the outer cover layer has a material hardness of less than 50 and a thickness of less than 0.035 in.
18. The golf ball of claim 16 , wherein the outer cover layer has a fourth hardness less than the third hardness.
19. The golf ball of claim 16 , wherein the inner cover layer outer diameter is from 1.59 in to 1.66 in.
20. The golf ball of claim 19 , wherein the inner cover layer outer diameter is from 1.6 in to 1.64 in.
21. The golf ball of claim 16 , wherein the center outer diameter is from 0.5 in to 1.25 in.
22. The golf ball of claim 21 , wherein the center outer diameter from 0.9 in to 1.2 in.
23. The golf ball of claim 16 , wherein the outer core layer outer diameter is from 1.52 in to 1.59 in.
24. The golf ball of claim 16 , wherein the ball has a moment of inertia of less than 83 g·cm 2 .
25. The golf ball of claim 16 , wherein the center has a first specific gravity and the outer core layer has a second specific gravity that differ by less than 0.1.
26. A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and at least one outer core layer adjacent the center, and the cover comprises at least one inner cover layer and an outer cover layer;
wherein the center has an outer diameter from 0.375 in to 1.4 in and deflection of greater than 4.5 mm under a load of 100 Kg;
the outer core layer has an outer diameter of from 1.4 in to 1.62 in;
the inner cover layer has an outer diameter of greater than 1.58 in and a material hardness of less than 72 Shore D; and
the outer cover layer has a hardness of greater than 56 Shore D;
and wherein the center has a first specific gravity and the outer core layer has a second specific gravity that differ by less than 0.1.